Top entity of the display driver. More...
Entities | |
| display_driver_w_decoder_arch | architecture |
| Architecture definition of the display_driver_w_decoder. More... | |
Libraries | |
| ieee | |
Use Clauses | |
| std_logic_1164 | |
| numeric_std | |
Ports | |
| clk | in std_logic |
| input clock, xx MHz. | |
| reset | in std_logic |
| active high | |
| ascii_in | in std_logic_vector ( 7 downto 0 ) |
| input ASCII code to display | |
| wr_en | in std_logic |
| active high write enable to store the ASCII code in a register | |
| disp_data_q | out std_logic_vector ( 14 downto 0 ) |
| disp_sel | out std_logic |
Detailed Description
Top entity of the display driver.
Top entity of the decoder architecture. Module description also goes here.
Member Data Documentation
◆ disp_data_q
|
Port |
Typically the data fed to display (single or multiple) is provided for single display at a time. If multiple displays are required disp_sel signal must be provided (according typical dynamic display indication).
Display Segment Bit Mapping
| Bit Number | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Display Segment | dp | m | l | k | j | i | h | g2 | g1 | f | e | d | c | b | a |
Note that there is no standard way to name the segments. Current data bits correspondt to display segments according this picture: https://www.maximintegrated.com/en/images/appnotes/3211/3211Fig02.gif
◆ disp_sel
|
Port |
If more displays needs to be fed change disp_sel to vector with length equal to number of displays. Use principles of the standard dynamic indication: provide data then enable the displays sequentially. If brightness control is desired just AND the selector and the PWM controller output.
The documentation for this class was generated from the following file:
- C:/Projects/single-14-segment-display-driver-w-decoder/Project/Sources/DisplayDriverwDecoder_Top.vhd
